高速公路T梁桥承载能力试验研究

Experimental Study on Bearing Capacity of T Girder Bridge on Expressway

为了确定钓鱼台大桥中简支T型梁桥结构的实际性能能否达到设计要求,如结构的强度、刚度、动力特性等是否达到设计要求,参考试验规程、相关设计规范和设计图纸,对T型桥梁进行承载能力试验研究,通过试验测得T型梁桥挠度、应变值、冲击系数等参数,与MIDAS/Civil模拟的理论参数数据对照,结果表明,这座T型梁桥的强度、动力特性等符合设计与使用要求。

In order to determine whether the actual performance of a simply supported T-beam bridge can meet the design requirements,such as whether the strength,stiffness,dynamic characteristics of the structure can meet the design requirements.According to the relevant test specifications of highway bridge load test regulations,the static load test of the bridge is carried out,and the calculated results are compared with the test results by using MIDAS/Civil finite element analysis software.The measured deflection,strain value,frequency and other parameters of the bridge under static load are summarized,and the measured data are compared with the theoretical data.The results show that the strength,stiffness and dynamic characteristics of the bridge structure meet the design requirements.